1516335889 has 2 divisors, whose sum is σ = 1516335890. Its totient is φ = 1516335888.

The previous prime is 1516335851. The next prime is 1516335917. The reversal of 1516335889 is 9885336151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1282857489 + 233478400 = 35817^2 + 15280^2 .

It is a cyclic number.

It is not a de Polignac number, because 1516335889 - 2¹³ = 1516327697 is a prime.

It is not a weakly prime, because it can be changed into another prime (1516335589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 758167944 + 758167945.

It is an arithmetic number, because the mean of its divisors is an integer number (758167945).

Almost surely, 2^1516335889 is an apocalyptic number.

It is an amenable number.

1516335889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1516335889 is an equidigital number, since it uses as much as digits as its factorization.

1516335889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 777600, while the sum is 49.

The square root of 1516335889 is about 38940.1577937224. The cubic root of 1516335889 is about 1148.8547865859.

The spelling of 1516335889 in words is "one billion, five hundred sixteen million, three hundred thirty-five thousand, eight hundred eighty-nine".